NGK SPARK PLUG D8HA 7112

NGK Spark Plug - D8HA

Part No.: 37-D8HA
Key Features:

• Copper Core: The D8HA spark plug features a copper core, which efficiently dissipates heat from the electrode and insulator tip, preventing overheating and improving the plug's lifespan.
• Raised Pre-Ignition Rating: The spark plug’s high-conduction copper and long nose insulator ensure better heat distribution, reducing the chances of pre-ignition in high-performance engines.
• Non-Resistor: This spark plug does not contain a resistor, making it ideal for engines that don't require electrical interference protection.

Specifications:

• Heat Range: 8 (ideal for engines operating at slightly higher temperatures).
• Thread Size: 12mm (fits engines with 12mm thread plugs).
• Gap: 0.028" (0.7mm), ensuring optimal spark for ignition.
• Hex Size: 11/16" (18mm), a standard size for easy installation and removal.
• Reach: 12.7mm (1/2"), ensuring proper installation depth in the engine.
• Terminal Type: Stud Terminal Threads, designed for threaded stud connections.
• Seal Type: Gasket Seat, providing a secure seal during installation.
• Resistor: No, it does not contain a resistor.

Applications: This spark plug is compatible with a wide range of vintage motorcycles and small engines, including:

Honda:

• 1981-1970 Honda ATC series (ATC110, ATC90, etc.)
• 1969-1961 Honda CA160, CA175, CA200, CA95 Benly Touring series
• 1961-1965 Honda CB160, CB175K, CB550F Super Sport, CB750 series
• 1970-1973 Honda SL175K, SL90, SS125A
• 1966-1979 Honda CT90, CT200, CL125A, CL160, CL175K, and others

Kawasaki:

• 1986-1984 Kawasaki KLT110, Z1 900, ZR1100, and ZRX1200R models

Suzuki:

• 1980-1991 Suzuki DR350, LT125, LT160, LT230E, LT250, and LT500 series
• 1990-1996 Suzuki GSX series (GSX-R600, GSX-R750, GSX1300R Hayabusa)

Yamaha:

• 1983-1998 Yamaha YFB250, YFM200, YFM225, YFM250 series
• 1998-2008 Yamaha TT-R250, WR250, FZS1000 FZ1, and others

Benefits:

• Improved Heat Dissipation: The copper core ensures that heat is efficiently removed from the spark plug, reducing the risk of overheating and prolonging the plug’s life.
• Enhanced Durability: NGK's high-quality ceramic insulator and copper core construction provide superior strength and better heat transfer, making this plug more durable in high-temperature conditions.
• Optimized Performance: This spark plug is ideal for vintage motorcycles and small engines, offering consistent ignition and reliable performance under various conditions.

Plug Construction:

• Copper Core: Ensures efficient heat removal, preventing overheating and prolonging plug life.
• Triple Seals: Prevents interior leakage and further aids in heat dissipation.
• Corrugated Ribs: Help prevent flashover, ensuring a stable spark for reliable engine operation.

Additional Information:

• Does Not Include Terminal Nut: If necessary, order part #067606-0051 separately.
• Traditional Spark Plug: Designed for longer life and better performance in high-stress engine applications, particularly in vintage motorcycles and small engines.

The NGK D8HA Spark Plug offers excellent heat management and performance for high-stress and high-temperature engine conditions. It is a reliable choice for vintage motorcycle enthusiasts and small engine users looking for long-lasting and high-performance spark plugs.

Majority of our listings are for a direct replacement for your original part.

Our parts are made of quality and are designed to meet or exceed the original OEM Standards.

Our products are often a cost effective alternative to genuine OEM Parts.

Please note: the models of bike we state in our listings are for general guidance only. Please make sure this item will fit your bike before purchasing. Also, we cannot guarantee fitment to any non-UK models.